Ubuntu 4092-1: Ghostscript vulnerability

    Date12 Aug 2019
    Posted ByLinuxSecurity Advisories
    Ghostscript could be made to access files if it opened a specially crafted file.
    Ubuntu Security Notice USN-4092-1
    August 12, 2019
    ghostscript vulnerability
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 19.04
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    Ghostscript could be made to access files if it opened a specially
    crafted file.
    Software Description:
    - ghostscript: PostScript and PDF interpreter
    Netanel Fisher discovered that the font handler in Ghostscript did not
    properly restrict privileged calls when '-dSAFER' restrictions were in
    effect. If a user or automated system were tricked into processing a
    specially crafted file, a remote attacker could possibly use this issue to
    access arbitrary files.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 19.04:
      ghostscript                     9.26~dfsg+0-0ubuntu7.2
      libgs9                          9.26~dfsg+0-0ubuntu7.2
    Ubuntu 18.04 LTS:
      ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.10
      libgs9                          9.26~dfsg+0-0ubuntu0.18.04.10
    Ubuntu 16.04 LTS:
      ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.10
      libgs9                          9.26~dfsg+0-0ubuntu0.16.04.10
    In general, a standard system update will make all the necessary changes.
    Package Information:

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